Investigators have connected DNA evidence from the scene of Sarah Fox's murder in Inwood Hill Park eight years ago to DNA collected at the scene of an Occupy Wall Street subway station vandalism in March.

Fox, 21, was found nude and strangled in the park in May 2004, days after she disappeared during a daytime jog. Investigators recovered her pink CD player in the woods just yards from her body.

Sources said Tuesday the DNA found on the CD player is linked to DNA found on a chain left by Occupy Wall Street protesters at the Beverly Road subway station in East Flatbush on March 28, 2012.

That Wednesday morning, protesters chained open emergency gates and taped up turnstiles in eight subway stations and posted fliers encouraging riders to enter for free.

A "communique" posted online later that day by the "Rank and File Initiative" described the act as a protest against service cuts, fare hikes and transit employees' working conditions.

It was attributed to "teams of activists, many from Occupy Wall Street ... with rank and file workers from the Transport Workers Union Local 100 and the Amalgamated Transit Union."

Sources said they have not connected a person to the common DNA found on the CD player and the chain. There's no immediate evidence that the DNA belongs to the Occupy Wall Street protesters who chained open the gates.

No one was arrested in the March incidents. Police are continuing to investigate, and are now working to identify the source of the DNA found in common with the chain and the CD player.

Dr. Lawrence Koblinsky, a forensics expert at John Jay College of Criminal Justice, said the DNA link was a major clue in the investigation, one that could potentially break the case.

“You’ve got the same DNA left at two distinct sites," said Koblinsky. "Until they find the individual who left that DNA, we won’t know. But the likelihood is high the person who left that DNA on the CD player is the killer of Sarah Fox.”

Dimitry Sheinman, 47, has long been considered a suspect in the Fox murder. He has since moved to South Africa and started a family. He was never charged in the case.

Sheinman recently returned to New York City, proclaiming to be a clairvoyant with knowledge of the killer's identity. The information he gave police was unclear.